Well-jack.



No. 775,733. PATENTED NOV. 22, 1964.

, W. E. A. P IPHER.

WELL JACK.

, APPLICATION FILED MAY 24. 1904.

N0 MODEL.

witness e s Inventor Httornegs N 775,733. Patented November 22, 1904.

UNITED STATES PATENT @FFICE.

WILLIAM E. A. PIPHER, OF PARKERS LANDING, PENNSYLVANIA, ASSIGNOR OFONE-THIRD TO WILLIAM G. MOGLAUGHLIN AND JOHN H. PIPHER, OF PARKERSLANDING, PENNSYLVANIA.

WELL-JACK.

SPECIFICATION forming part of Letters Patent No. 77 5,7 33, datedNovember 22, 1904.

Application filed May 24;, 1904. Serial No. 209,529- (NO modem T all1071101911 it y OOH/067""! form or other stationary structure every timeBe it known that 1, WILLIAM E. A. PIPI-IER. it is employed or leftpermanently in posia citizen of the United States, residing at. tionthereon, and the result it that damage Parkers Landing, in the county ofArmstrong or breakage frequently occurs by parts of ma- 5 and State ofPennsylvania, have invented a chinery falling upon it.

new and useful Well-Jack, of which the follow- With the apparatus of thepresentinvention ing is a specification. the above-noted objects are ina ready and This invention relates to apparatus for couppositive mannerobviated and a well-jack is ling and uncoupling the sections ofdrill-rods presented Which will efiectually prevent any 10 and otherparts of oil and Artesian wells or injury to the casing or other partsof the wellfor similar purposes, and has for its object to drillingapparatus no matter how great the improve the construction and provide asimstrain or power employed for effecting coup- 6O ply-constructed andconveniently-operated ling or uncoupling of the drill-rods may be.apparatus of increased efliciency and dura- The present apparatuscomprises a toothed I5 bility and which in use will not injure the bar10, preferably segmental in form and hav- Well-casing or other parts ofthe well-drilling ing at one end a stop 11 for engaging the freeapparatus. end of one of the operating-wrenches, 12,

With the above and other objects in view, and provided, further, withstep-by-step leas will appear as the nature of the invention is vermechanism (indicated generally by 13 2 better understood, the sameconsists in the and l t) to engage with the free end of the novelconstruction and combination of parts other operating-wrench, 15. Asthis step-byof a well-jack, as will be hereinafter fully destepmechanism is of the usual form and as scribed and claimed. the detailsof construction form no part of the In the accompanying drawings,forming a present invention,detailed illustration thereof 25 part ofthis specification, and in which like is omitted.

characters of reference indicate correspond- As is Well known, apparatusof this charing parts, there is illustrated one form of em-r acter areoperated by applying one of the bodiment of the invention capable ofcarrywrenches, 12, of the squared or oblong portion ing the same intopractical operation, it be 16 of the bit-stock 17 adjacent to the joint3 ing understood that the elements therein ex- 18, by which it is unitedto the drill-stem 19,

hibited may be varied or changed as to shape, and engaging the free endof' the wrench-hanproportion, and exact manner of assemblage dle withthe stop 11 and then applying the without departing from the spiritthereof. other Wrench, 15, to the squared portion of In the drawings,Figure l is a view in perthe drill-stem, with thefree endof this han- 35 spective, exhibiting the apparatus in operative dle bearing againstthe step-bystep mechanposition. Fig. 2 is a view in plan with a partism, and as the lever of the latter is operated of the apparatusremoved. the wrenchesare moved toward each other, 5

In operating an ordinary oil-well jack the and the complete joining ofthe parts 17 and lateral strain or pressure is frequently so 19 isefiected. The members 16 and 19 are 4 great that damage results to thepiping, casdisconnected by reversing the disposition of ing, plates, andother parts of the well-drillthe wrenches that is to say, the wrench l2ing apparatus unless lateral strain is prewill have its handle inengagement with the 9 vented by employing temporary stays orstep-by-step mechanism and the wrench 15 braces, generally of wood,which is troublewill have its handle in engagement with the 45 some,laborious, and results in delay, increasstop 11, and upon operating theleverl t the ing thereby the operating expense of the parts will beuncoupled, as-will bereadilyapwell-drilling apparatus. Furthermore, theparent. ordinary well-jack has to be secured to a plat- Under theoperation of the lever mechanism there will be caused a heavy lateralstrain between the members 17 and 19 and the rackbar 10, whichfrequently results in damage to the well-casing and other parts of theWelldrilling machinery. To overcome or counteract this strain, a thrustbearing is employed comprising two segmental members 23 and24:,connected by a hinge 25. The outer side of the member 24c has arecess, preferably semicircular in form, to engage the drillrod belowthe squared portion 16, and connected with the member 23 are threeradiallydisposed braces 26, 26, and 26 the braces 26 and 26 beingpivotally connected with the member 23 through the medium of bolts 23,thus to permit these braces to be moved to and from the center brace 26in efie'cting adjustments of the apparatus. Each brace is provided witha plurality of spaced apertures 27, which are engaged by bolts 28 tohold the braces adjustably connected with the bar 10 relative to themember 23.

As will be seen from the construction of the apparatus, the employmentof the ordinary platform for holding it properly positioned withrelation to the drill-rod or well-casing is rendered unnecessary, as itwill be seen that all lateral strain is absorbed by the braces 26, 26,and 26 andthe thrust-bearing. In other Words, the strains are centered.By dispensing with the employment of a platform not only is considerableexpense saved in the operation of the apparatus, but its movement frompoint to point is facilitated and the time required to set it up foroperation measurably decreased.

While the apparatus of this invention is exceedingly simple ofconstruction, it will be found thoroughly efficient and durable in usefor the purpose designed and will in a positive manner secure theobjects sought.

Having thus described the invention, what is claimed is 1. An apparatusof the class described comprising a thrust-bearing, a toothed segmental3. An apparatus of the class described bom- 1 prising a toothedsegmental bar and step-bystep mechanism combined therewith, and radialbraces connecting the bearing and the bar, the outer braces beingmounted for pivotal movement with relation to the bar.

4. An apparatus of the class described comprising a toothed segmentalbar and step-bystep mechanism combined therewith, a thrust: bearingincluding a fixed and movable member, and a plurality of bracesconnecting the fixed member and the bar, the outer braces beingpivotally connected with the fixed member.

5. An apparatus of the class described comprising a rack-bar, athrust-bearing including a fixed and a movable member, and a pluralityof braces connecting the fixed member and the bar.

6. An apparatus of the class described comprising a rack-bar having astep-by-ste'p mechanism combined therewith, a thrustbearing, and bracesconnecting the thrust-bearing and the bar.

7 In an apparatus of the class described, a rack-bar having a step bystep mechanism combined therewith, a thrust-bearing, and brace membersconnected at one end to the thrust-bearing and having their other endsadjustably connected with the bar.

In testimony that I claim the foregoing as my own 1 have hereto aflixedmy signature in the presence of two witnesses.

WILLIAM E. A, PIPHER.

